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authorDaniel P. Berrange <berrange@redhat.com>2016-05-20 17:43:44 +0100
committerDaniel P. Berrange <berrange@redhat.com>2016-07-04 10:46:59 +0100
commit8b7cdba386d55ecee2caa26973c1d6c31822e801 (patch)
treeefac27c8a317697f3310a402e14fd5a40fd9490d /target-ppc/helper.h
parent96b39d8327883094f52b0a3d3f25dba83d6d1d63 (diff)
crypto: fix handling of iv generator hash defaults
When opening an existing LUKS volume, if the iv generator is essiv, then the iv hash algorithm is mandatory to provide. We must report an error if it is omitted in the cipher mode spec, not silently default to hash 0 (md5). If the iv generator is not essiv, then we explicitly ignore any iv hash algorithm, rather than report an error, for compatibility with dm-crypt. When creating a new LUKS volume, if the iv generator is essiv and no iv hsah algorithm is provided, we should default to using the sha256 hash. Reported-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Diffstat (limited to 'target-ppc/helper.h')
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